Advertisement

Chemo-mechanical Characterization of Bitumen Binders with the Same Continuous PG–Grade

  • Jean-Pascal Planche
  • Michael D. Elwardany
  • Jeramie J. Adams
Conference paper
Part of the RILEM Bookseries book series (RILEM, volume 20)

Abstract

Chemo-mechanical analysis tools were used to provide plausible reasons behind different binder properties that are not well captured by the conventional Superpave PG-grading system. In this study, six binders were divided in two groups based on their continuous PG-grades. The binder matrix includes: two SBS modified binders, one air blown bitumen, one bitumen with high wax content and two other unique binder blends. Although the binders in each group have the same continuous PG-grades based on AASHTO M320, they exhibit very different low-temperature performance based on the binder relaxation ΔTc index, and they have different upper PG performance according to MSCR testing and AASHTO MP19, which takes into account both traffic load and climate conditions. Based on the results, high apparent molecular weight waxes appear to lead to poor low-temperature cracking and lower molecular weight waxes lead to poor rutting performance. Meanwhile incompatible polymer modification seems to lead to poor rutting and cracking performance relative to unmodified binders or even air blown binder.

Keywords

Binder waxes Polymer compatibility SAR-AD Waxphaltene Determinator 4-mm DSR MSCR Glass transition Crystallizable fractions 

Notes

Acknowledgments

The authors would like to acknowledge AIRC-1st Iteration members (Surfax, Repsol, Husky, BRRC, IFSTTAR, Eiffage, Eurovia, and WRI). The authors would also like to acknowledge P. Coles for rheological testing, J. Forney for DSC measurements, J. Loveridge and J. Rovani for SAR-AD analysis, N. Bolton for running FT-IR, and R. Boysen for performing SEC analysis.

References

  1. Anderson, R.M., King, G.N., Hanson, D.I., Blankenship, P.B.: Evaluation of the relationship between Asphalt binder properties and non-load related cracking. J. Assoc. Asphalt Paving Technol. 80, 615–649 (2011)Google Scholar
  2. Boysen, R.B.: Adaptation of existing analytical scale size exclusion chromatography methods. Technical white paper FP22 (2015)Google Scholar
  3. Farrar, M., Grimes, R.W., Turner, T.F., Planche, J.P.: The universal simple aging test and low temperature performance grading using small plate dynamic shear rheometry. Technical white paper FP14 (2015)Google Scholar
  4. Federal Highway Administration (FHWA) Technical Brief: Automated High-Performance Liquid Chromatography Saturate, Aromatic, Resin, and Asphaltene Separation. US Department of Transportation, No. FHWA–HRT–15–055. (2016)Google Scholar
  5. Federal Highway Administration (FHWA): Technical brief: four-mm dynamic shear rheometer. US Department of Transportation, No. FHWA–HRT–15–053 (2017)Google Scholar
  6. King, G., Anderson, M., Hanson, D., Blankenship, P.: Using black-space diagrams to predict age-induced cracking. In: RILEM Fatigue Cracking Conference, Delft, June 2012Google Scholar
  7. Petersen, J.C.: A review of the fundamentals of asphalt oxidation. Transportation Research Circular, E-C 140 (2009)Google Scholar
  8. Planche, J.P., Adams, J.J., Elwardany, M.D., Boysen, R.B., Rovani J.: Understanding the trends in asphalt binders matters! In: TRB Annual Meeting, Washington D.C. (2018)Google Scholar
  9. Schabron, J., Rovani, J., Sanderson, M., Loveridge, J., Naydong, L., McKenna, A., Marshall, A.: Waxphaltene determinator method for automated precipitation and redissolution of wax and asphaltene components. Energy Fuels 26, 2256–2268 (2012)CrossRefGoogle Scholar
  10. Turner, T.F., Branthaver, J.F.: DSC studies of Asphalts and Asphalt components. In: Usmani, A.M. (ed.) Asphalt Science and Technology, pp. 59–101. Marcel Dekker, New York (1997)Google Scholar

Copyright information

© RILEM 2019

Authors and Affiliations

  • Jean-Pascal Planche
    • 1
  • Michael D. Elwardany
    • 1
  • Jeramie J. Adams
    • 1
  1. 1.Asphalt and Petroleum TechnologiesWestern Research InstituteLaramieUSA

Personalised recommendations